com.acgist.snail.net.codec.MultilineMessageCodec Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of snail Show documentation

基于Java开发的下载工具，支持下载协议：BT（BitTorrent、磁力链接、种子文件）、HLS（M3U8）、FTP、HTTP。

There is a newer version: 2.17.0

package com.acgist.snail.net.codec;

import java.net.InetSocketAddress;

import com.acgist.snail.context.exception.NetException;
import com.acgist.snail.utils.StringUtils;

/**
 * 多行消息处理器
 * 
 * @author acgist
 */
public final class MultilineMessageCodec extends MessageCodec {

	/**
	 * 消息分隔符
	 */
	private final String separator;
	/**
	 * 多行消息结束符（正则表达式）
	 */
	private final String multilineRegex;
	/**
	 * 多行消息
	 */
	private final StringBuilder multilineMessage;
	
	/**
	 * @param messageDecoder 消息处理器
	 * @param separator 消息分隔符
	 * @param multilineRegex 多行消息结束符
	 */
	public MultilineMessageCodec(IMessageDecoder messageDecoder, String separator, String multilineRegex) {
		super(messageDecoder);
		this.separator = separator;
		this.multilineRegex = multilineRegex;
		this.multilineMessage = new StringBuilder();
	}

	@Override
	protected void doDecode(String message, InetSocketAddress address) throws NetException {
		if(StringUtils.regex(message, this.multilineRegex, false)) {
			this.multilineMessage.append(message);
			this.doNext(this.multilineMessage.toString(), address);
			this.multilineMessage.setLength(0);
		} else {
			this.multilineMessage.append(message).append(this.separator);
		}
	}

}